Libraries: Main Library, Keskustie 23, tel. +358 40 1339 120. Open from 1 June to 31 August Mon–Thu between 10 am and 6 pm, Fri between 10 am and 5 pm, Closed on weekends. Open from 1 September to 31 May Mon–Thu between 10 am and 7 pm, Fri between 10 am and 5 pm, Sat between 10 am and 2 pm